The magnetization of a Ho${}_2$Fe${}_{17}$ single crystal has been measured along the principal crystallographic directions in pulsed magnetic fields up to 60 T. Stepwise discontinuities in the magnetization occur at 45 and 55 T along the [120] and [100] directions, respectively. The data allowed us to deduce the molecular field at the Ho site. As a cross check, the molecular field was determined as well from a magnetization measurement when the Ho${}_2$Fe${}_{17}$ single crystal was let rotate freely. Both values are in good agreement with each other.

• Received 24 February 2011

DOI:https://doi.org/10.1103/PhysRevB.83.214420